| 摘要 |
<p>AbstractAn Apparatus for guiding a Surgical InstrumentA surgical instrument guidance apparatus is proposed to guide a surgicalinstrument or tool. The apparatus includes a device guiding mechanism,composed of inner and outer sheaths, for defining a longitudinal path alongwhich the surgical instrument is to be moved. The guidance apparatus includestwo mechanisms which independently control two degrees of freedom in theposition of the device guiding mechanism relative to a central axis of theapparatus: (i) a device swing mechanism which sets an angle between thelongitudinal path and the central axis; and (ii) a device rotator which sets therotational position of the longitudinal path about that central axis. In other words,using the device rotator the longitudinal path can sweep out a conical surfaceabout the central axis, the semi-vertical angle of that cone being selected usingthe device swing mechanism.[Fig. 1]</p> |
